CID797718 is a protein kinase D1 (PKD1) inhibitor (IC50 = 7 μM). It also inhibits CDK activating kinase (CAK) and polo-like kinase 1 (PLK1) but has no activity at AKT (IC50s = 8.4, 21.9, and >50 μM, respectively). CID797718 inhibits PKD1 activity in LNCaP cells with an IC50 value of 0.21 μM. CID797718 is a byproduct in the synthesis of CID755673 .